Adjustable weatherstrip for windows



June 23, 1953 c, M|LE$ ADJUSTABLE WEATHERSTRIP FOR WINDOWS Filed Dec. 5, 1951 S. M m My 1 cm 1 w m 6 I N 1 1 a. m v. m g Q n mm .10 7 W a a I. 6/ M f 1 1 z a. f a

g I Z flfi 1 a A TTORNEY Patented June 23, 1953 UNITED STATES OFFICE ADJUSTABLE WEATHER/STRIP FOB WINDOWS fErnestC. Miles, Dallas,v Tex. Application December 5, 1951, Serial No; 259,952

.5 Claims. (01. 20-69) This inventionrelates to Weatherstripping and .more particularly to improvements in weatherstrips especially designed for double hung, sliding sash type windows.

The, principal object. of the invention first: to provide va Weatherstrip which is coextensive with-and spans both sash channels of .a window frame, serving as a seal for both sashframes as well as a weatherprotection for the jamb. Secnd: to provide. a Weatherstrip having a longitudinal channel formed in itsmidsection opposing parallel bends and a channel shaped parting bead engaging said longitudinal channel and adjustable perpendicularly to the jamb whereby said bends will serve as fulcrums to vary the angle and tension of the sealing portions of the weatherstripin relation to the sash frames and third; to provide a Weatherstrip which may be placed in position for securement prior to the installation of either of the two sash frames and adjusted to proper tension following the mounting of the sash frame parting bead.

Other objects will .appearas the description proceeds, taken in connection with the accompanying drawing, wherein:

Figure 1 is a fragmentary perspective view of a Window frame showing installed therein a weatherstrip embodying the invention;

Figure 2 is a view of a window frame in transverse sectionshowing the invention installed before being brought under tension; and,

Figure 3 is a view similar to Figure 2 but showing the Weatherstrip under tension.

Continuing with a more detailed description of the drawing, reference numeral I0 denotes the jamb of a window and I I, the blind stop. Afiixed to the jamb I 0 adjacent its inner edge is the inner stop I2.

It has long been the custom with few exceptions, to apply weatherstrips to the upper section of the upper sash frame channel and to the lower section of the lower sash channel. These individual strips are effective weather seals but leave much of the jamb exposed to deterioration. However, since it is the usual practice to install the upper sash frame I3, then the parting bead, followed by the lower sash frame I4, it has not been practical to form a one-piece weather-- strip for both sash frame channels because the parting bead would interfere with the installation of the upper sash frame and for the further I reason that proper tension could not be impose on the strip for the upper sash frame.

The present invention successfully meets all Weatherstripping requirements, affording a medium of weather protection, for the exposed. jamb face and enables'the-upper sashflfra-me to be installed after the Weatherstrip has been placed position.

The foregoing is made possible by rolling or otherwise forming in a strip I5 .a shallow prominence or bead I6 longitudinally throughthe midsection of the strip which latter is of a width but slightly less than the space between the blind stop II and inner stop I2, thus to span both sash channels- In adjacent parallelism with each side of the bead I6 is a bend I'I. These beads are at all times in flush engagement with the face of jamb I0 throughout its length and when there is no pressure on the bead IS, the flanges I8 are parallel with the face of the jamb I0, as shown in Figure 2.

In forming the bead I6, a small shoulder a is made at the base thereof on each side and serves as a seat for the flanges of a parting bead I9 of channel shape. The parting bead I9 is coextensive with the Weatherstrip .and is provided with longitudinally spaced holes matching with like holes in the bead I6, to receive screws 20 which hold the parting bead. I9 and the Weatherstrip I5 in engagement with the jamb II).

Outstanding among the advantages of the invention is the fact that the permanent bead I6 of the strip does not project outwardly to such degree that it will interfere with the installation of the upper sash frame I3.

To install-the Weatherstrip, it is placed in position between the stops II and I2 and temporarily secured as by tacking. The upper sash frame I3 is then installed by passing its edges over the beads I6. The parting bead I9 is then positioned over the bead I6 in the manner shown, after removing the temporary retaining means for the strip. The lower sash frame I I is installed and the flanges I8 of the Weatherstrip are then forced outwardly againstthe edges of the sash frames by driving the screws 20 inwardly so that their heads will bear against the parting head I9 to cause the latter to exert inward pressure on the shoulders at of the strip. This action imposes pressure at the fulcrum points I1, causing the flanges I8 to move outwardly against the edges of sash frames I3 and I4, the amount of tension on the flanges I8 depending upon the degree of inward movement of the screws 20.

Manifestly, the construction as shown and described is capable of some modification and such modification as may be construed to fall within the scope and meaning of the appended claims edges of said strip through fulcrum bends.

to be incorporated in the space between the is also considered to be within the spirit and intent of the invention.

What is claimed is:

1. In a window frame having a jamb, a weatherstrip for a double hung, sliding sash type window, a metal strip substantially equal in width to the space between the outer and inner sash frame stops of said window frame, a longitudinal prominence coextensively formed in the midsection of said strip, portions of the latter on opposite sides of said prominence extending angularly toward the face of said jamb, thence outwardly toward said sash frame stops in flush engagement with said jamb face and form intermediate said prominence and the outer, edges of said strip opposed, longitudinally extending fulcrum bends in adjacent parallelism with said prominence, a channel shaped parting bead having flanges engaging the sides of said prominence throughout its length and means for securing said strip and said parting bead to said jamb, said means being effective to impose pressure on said strip at its mid-section to move the outer 2. In a window frame having a jamb, and double hung, sliding sashes, a Weatherstrip coextensive with the sash channels of said frame and substantially equalling in width the distance between the outer and inner sash stops on said window frame and having its midsection converging into a longitudinal prominence spaced away from said jamb, the portions of said weatherstrip on each side of said prominence being turned inwardly toward said jamb thence into parallelism therewith to form longitudinal fulcrum bends, a channel shaped parting bead having flanges bearing against said Weatherstrip on each side of said prominence and means securing said bead and Weatherstrip to said jamb and adapted to impose pressure on said fulcrum bends through the midsection of said weatherstrip to effect outward displacement of the outer edges of said Weatherstrip against the outer edges of sash frames slidably hung in said frame.

3. In a window frame, a Weatherstrip adapted sliding sash frames and said window frame, said Weatherstrip being substantially coextensive with the length and combined widths of the sash channels in which said frames operate and provided with an elevated midsection throughout its length, the portions of said Weatherstrip on opposite sides of said midsection normally lying in flush engagement with said sash channels the medium of said through angle bends, each said elevated midsection forming a fulcrum means, a parting bead overlying the elevated midsection of said Weatherstrip, means attaching said parting bead and said Weatherstrip to said window frame and effective to transmit pressure through said parting bead and the elevated portion of said Weatherstrip to said fulcrum means to produce outward movement of the outer edges of said Weatherstrip in relation to the pressure imposed on the midsection thereof.

4. In a window frame having a jamb, a weatherstrip comprising a length of resilient material having a portion formed in its midsection spaced away from said jamb throughout its length, the portions of said Weatherstrip on opposite sides of said midsection being turned inwardly toward said jamb through an obtuse angle, thence into flush relationship with said jamb to provide a longitudinal bend intermediate said midsection and each edge of said Weatherstrip, an inverted channel member coextensive with and conforming to said midsection and means for transmitting pressure on said midsection through said inverted channel member to cause the outer edges of said Weatherstrip to move in directions counter'to the movement-of said elevated portion under said pressure through the medium of fulcrum points defined by the longitudinal bends in said Weatherstrip.

5. In a window frame having a jamb, a weatherstrip comprising a length of resilient material having a longitudinal bead throughout its midsection, movable perpendicularly with respect to said jamb, the portions of said Weatherstrip on opposite sides of said head being turned inwardly toward and against said jamb at obtuse angles and defining a longitudinal fulcrum point on each side of andcoextensive with said bead between the latter and each edge of said weatherstrip and means attaching said Weatherstrip to said jamb and for imposing pressure throughand joined with out the length of said bead to displace the outer edges of said Weatherstrip on said fulcrum points in a direction counter to the imposed pressure.

ERNEST C. MILES.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,122,366 Dennis r June 28, 1938 2,267,021 Glass V Dec. 23, 1941 

